Lifting jack



June 12, 1923.

E. C. BATES LIFTING JACK Filed April 28 1922 JI HII lzivzzA/zwza wait 79%;,

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ZZZZZZALE M Patented June 12, 1923.

UN S

PATENT?! OFFICE.

EDMUND C. BATES, OF ALLIANCE, .OI-I-IQ, ASSIGNOR TO THE BUCKEYE JACK 'MANU- FAGTURING COMPANY, OF ALLIANCE, OHIO, A

CORPORATION' OF OHIO.

f LIFTI'NG JACK.

' Application filed April 28, 1922. Serial No; 557,090.

To all w 710m it mag concern Be it known that I, EDMUND C. Barns, a

citizen of the United states esiding at liance,'inthe county of Stark and State'of Ohio, have invented a certain new and use-- scription,'referencebeing-had to the accomhas for-one of its objects the provision of accomplished by rota-ting the handle a frac Y on the trip lever; Figs. 6 and? are perspec panying drawings,

This invention relates to lifting acks;

particularly 'those suitable for lifting the axles of automobiles and other vehicles; and

a manual operating device arranged to en'- able the operator to insert the ack'beneath an axle and remove it therefrom WVItllOllt 're quirin'g him to reach beneath the vehicle.

My inventionalso contemplates the provision of a removable handle Which'when in place, may be used in actuating a trip lever for reversing the direction of travel of the supporting rack bar. This reversal'may be tion of a revolution, thusobviating the necessity for the operatorto reach beneath the vehicle and manually actuate the trip lever. A reversing mechanism to which the handle may be applied is shown-,f described, and claimed in my copending application, Serial No. 422,488,'filed November 8, 1920.

The means for cari vingout myinvention will be fully set forth in the following description which pertains tothe accompanying drawings and the essential features will be summarizedin the claims.

In the drawings, F ig.- 1 is adiagrammatic;

view of the rear end of an automobile. having an axle thereof *supported -by"a jack equipped with the manual operating device of this invention; Fig,-2 is a side elevation onan enlarged scale of the jack; showing ber of the-jack; Fig. 3 "is'a transverse section taken on the line 3-3 of Fig, 2; Fig, 4 is a longitudinal vertical section taken through the jack operatin-gglever showing the manner of attachment of the handle thereto; Fig. 5 is a diagrammatic view illustrating the different manner in which .the two reversing lugs of the socket member act tive views of two forms of extension handle, either of whiclrmay be employed with the jack proper as shown.

I Designating the parts shown in the drawlngs'by the use of reference characters 10 indicates a standard and 11 a rack'bar of;

the lifting jack having a trip lever 12,- with anoperating lever 13 formed with a socket;

to receive an extension handle and provided with suitable lugs 14 and 15 for actuating the trip lever. Such actuation is effectedby rotating the operating lever a fraction ofa rotation, thereby shifting the trip lever up. or down,-as the case may be to reverse.

the direction of movement of the rack bar! This mechanism is set forth -mo re"specifi-' cally in detail in the above mentioned. 00-' pending application :and reference may be had thereto for-claims covering the specific construction The present invention pertains primarily to the relationbetween the socket lever and the extension handle;

The extensionhandle is preferably composed "of' two members which may be collapsed for storage or extended "to provide a longmanual lever. InFig 6,such'handle' designatel 20is shown'asconsisting of a pair, of bars 21"each 'provided'wvith a sleeve 22 embracing. the other bar. These, bars, ac-

cgrdin-gly, in efi'ect,'telescope into a length equivalent to one bar or extend. into substantially the length of the two bars. a A suitable set screw23 may clamp the handle in 'itsextended form. Figs. 1 and 7 illustrate another form of extension handIeXQO, wherein twomembers 27 and 28 are pivoted at 29 but may be held extended by a slidable sleeve 30 adapted to pass over the jo -int.

The operating member13 of the jack has anopen ended socket 16 adapted to receive the inner end of the extension handle. Such inner endflvhatever the form of the extensio'n is preferably of a formgwhicl-ilincross section is a narrow upright rectangle, and the socket 16 is formed "correspondingly.

' Formed in the upper portion of the so ket member adjacent ,to' its-entrance end is. a.

transverse "slot 17 in which. ismounted a loosepin- 18 having heads 19 on its opposite ends to theslot. p y,

That portion of the extension handle which is to occ-upythe socket is provided with a notch 24 in its upper edge adapted to repermanently retain "it within ceive the pin. The top corner of the handle is also beveled or rounded off, as shown at 25 in front of the notch 24.

'With .such a construction as described, whenever the extension handle is shoved into the socket, the beveled end 25 first raises the pin 18 and then when the notch 24 comes beneath the pin, the pin drops down into the notch and the extension handle is temporarily locked to the jack. This retains the handle in position and enables the operator to move the jack under the vehicle and withdraw it therefrom without pulling the handle from the socket. Further, since the socket and .handle .are non-circular in cross section, the handle may rotate a fraction of a revolution to bring one or the other of the lugs in engagement with the trip lever for reversing the ack without disengaging the handle from its socket.

.When it is desired to remove the jack,.the handle is turneda fraction of a revolution to actuate the trip lever 12 and reverse the operating. mechanism within the jack and then brought back to the position shown in Fig. 1 for lowering. the jack. After the vehicle wheels are lowered to the ground, the jack may be removed merely by pulling the handle outwardly. Then the handle may be disengaged from the jack and collapsed for storage purposes. It will be'noted from Fig. 5, that the lug 15 is slightly shorter than the lug14. This difference is immaterial in the ordinaryoperation of the jack, and in the usual positions of thesocket member either lug will necessarily engage the trip lever if the ham dle be rotated in the proper direction. However, the socket member be moved to its extreme lowermost position, the lug 15 may then clear the trip lever 12 when the latter is in its uppermost position, as illustrated in Fig. 5. The purpose of this is to enable the extension handle to turn the socket lever bottom side up so thatthe pin 18 would fall by gravity outof thenotch 24c freeing the extension handle. This enables the handle to be withdrawn leaving the jack in place under the .car, whenever there is occasion to do so.

In the form of extension handle shown in Figs. 1 and 7, a bend is made in the member 27 while the member 28 which the Operator grasps is twisted toform a hand grip 26 which is curved, as shown. The curved end prevents that end of the handle being inserted in the socket member and the bend of the member 17 prevents it being inserted bottom side up. Accordingly, there is no danger of the handle being inserted in any position'except with the notch 24 available for engaging the pin. In the form of handle illustrated in. Fig. 6, however, either end of the handle is shaped for insertion of the jack, and I accordingly provide notches 24 in each of the edges of each of the bars 21 and I round each of the four corners 25. Accordingly, in this connection it makes no difference which way the extension handle is inserted.

In view of the foregoing description, it will be seen that my invention permits the placing of the jack, reversal of operation and withdrawing of the jack, all by the handle, without requiring the operator to assume an awkward position beneath the vehicle or soil his clothes. He may leave the jack in place andwithdraw the handle whenever desired. The handle is easilyinserted and cannot be improperly inserted, and is formed so that it may be readily collapsed for-storage.

Having thus described my invention, I' claim y 1. In a device of the class described, the combination with an operating lever for a jack having a notched handle associated therewith, said lever having a slot therein, and means movable in the slot and adapted to engage the notch for clamping the member and the lever together.

2. Ina lifting jack having an operating lever which is axially rotative to control the ultimate direction of movement of thejack, ahandletherefor, comprising extension members, locking means to detachably connect said lever and handle, and additional means to prevent relative rotation between the lever and handle when the two are locked together. I

3. In a lifting jack, an oscillating operating lever therefor, said lever being also axially rotative to control the ultimate direction of movement of the jack resulting from oscillations ofsaid lever, a handle adapted. to be fitted to said operating lever, said handle and lever having complementary parts, whereby relative rotation of the two is prevented, .means whereby the act of fitting said handle to the operating lever serves to detachably lock the two, and. means whereby they become disengaged in a certain rotative position of the operating lever.

.4. In a device of the class described, the combination with an operating lever for a jack, said lever having a non-circular socket therein and having a slot extending transversely of the socket, of a handle complementary to the socket having a notch adapted to be placed in registration with said slot and a pin extending loosely through the slot and adapted to occupy the notch for clamping the handle to the lever.

5. In a lifting jack, the combination with the raising mechanism, of an operating lever therefor which is axially rotative to control the ultimatepdirection of movement ofv the jack, a handleadapted to be fitted to saidopcrating lever, and a gravity lock for temporarily holding the handle to the lever.

'6. In ali'fting jack, the combination with the raising mechanism, of an operating lever therefor provided with a non-c1rcular socket,

said lever having a slot through itadjacent* handle becomes automatically freed from the jack. a

8. The combination with aqack, of an operating lever therefor, a handle adapted to engage the operating lever, a lock adapted to automatically lock the handle to the operating lever, and means whereby said lock is automatically released in a certain position of the parts.

9. In a lifting jack, the combination with the raising mechanism, of an oscillating operating lever therefor, mechanism whereby an axial rotative movement of the operating lever may reverse the jack, a handle adapted to engage the operating lever, means for temporarily locking the handle to the operating lever, said lock being adapted to main tain itself in engagement during the raising or lowering or reversing movements, and means whereby in a certain position of the parts the handle is freed from the operating lever.

10. In a lifting jack, the combination with the raising mechanism of an operating lever, a trip lever adapted to control the ultimate direction of movement of the "jack resulting from oscillationof theoperating lever, said operating lever being adapted to be turned on its axis to throw'the trip lever, ajhandle adapted to engage theoperating lever, a

gravity lockadapted to hold the handle in temporary engagementv with the" operating lever, said operatinglever being adapted to.

gravity lock to re-- be inverted to cause the lease the handle.

11. The combination with a lifting jack,

of a handle therefor, a lock for temporarily locking the handle to the jack, comprising a pin movably carried by the jackandtwo 1 notches in opposite edges of the handle, either of which is adapted to cooperate with the pin, whereby the handle may be inserted either edge up and stillbecomelocked by reason of such insertion.

12' In a lifting ack, the combination with a raising mechanism, of an operating lever therefor having a rotative member, said member having-a pairof lugs,jmeans whereby oscillations of the member" operate the jack, a trip lever for reversing it, said trip lever being adapted to be engaged by either of said lugs upon rotation of saidinember, I

whereby the jackmay' be reversed, one of said lugs being shorter than the other where'- by in a certain position of the rotative member said lug may clear thetrip lever toallow the rota-tive member to be turned upside down, a handle, and a gravity-lock adapted I to'norn'ially lock the handle to the I'0i'=':.il\'0 member but freeing the same when the rotative member is turnedupside down.

In testimony whereof I hereunto aflix my signture.

- EDMU D o. BATES. 

